| 924281 | M27C256B-10XC3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924282 | M27C256B-10XC6 | 256 Kbit (32Kb x 8) EPROM, 5V, 100ns | SGS Thomson Microelectronics |
| 924283 | M27C256B-10XC6TR | 256 Kbit (32Kb x 8) EPROM, 5V, 100ns | SGS Thomson Microelectronics |
| 924284 | M27C256B-10XC6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924285 | M27C256B-10XC6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924286 | M27C256B-10XC7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924287 | M27C256B-10XC7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924288 | M27C256B-10XF1 | 256 Kbit (32Kb x 8) EPROM, 5V, 100ns | SGS Thomson Microelectronics |
| 924289 | M27C256B-10XF1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924290 | M27C256B-10XF1X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924291 | M27C256B-10XF3 | 256 Kbit (32Kb x 8) EPROM, 5V, 100ns | SGS Thomson Microelectronics |
| 924292 | M27C256B-10XF3TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924293 | M27C256B-10XF3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924294 | M27C256B-10XF6 | 256 Kbit (32Kb x 8) EPROM, 5V, 100ns | SGS Thomson Microelectronics |
| 924295 | M27C256B-10XF6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924296 | M27C256B-10XF6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924297 | M27C256B-10XF7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924298 | M27C256B-10XF7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924299 | M27C256B-10XN1 | 256 Kbit (32Kb x 8) EPROM, 5V, 100ns | SGS Thomson Microelectronics |
|
| 924300 | M27C256B-10XN1TR | 256 Kbit (32Kb x 8) EPROM, 5V, 100ns | SGS Thomson Microelectronics |
| 924301 | M27C256B-10XN1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924302 | M27C256B-10XN1X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924303 | M27C256B-10XN3 | 256 Kbit (32Kb x 8) EPROM, 5V, 100ns | SGS Thomson Microelectronics |
| 924304 | M27C256B-10XN3TR | 256 Kbit (32Kb x 8) EPROM, 5V, 100ns | SGS Thomson Microelectronics |
| 924305 | M27C256B-10XN3TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924306 | M27C256B-10XN3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924307 | M27C256B-10XN6 | 256 Kbit (32Kb x 8) EPROM, 5V, 100ns | SGS Thomson Microelectronics |
| 924308 | M27C256B-10XN6TR | 256 Kbit (32Kb x 8) EPROM, 5V, 100ns | SGS Thomson Microelectronics |
| 924309 | M27C256B-10XN6TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924310 | M27C256B-10XN6X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924311 | M27C256B-10XN7TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924312 | M27C256B-10XN7X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924313 | M27C256B-12B1 | 256 Kbit (32Kb x 8) EPROM, 5V, 120ns | SGS Thomson Microelectronics |
| 924314 | M27C256B-12B1 | 256 KBIT (32KB X8) UV EPROM AND OTP EPROM | ST Microelectronics |
| 924315 | M27C256B-12B1TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924316 | M27C256B-12B1X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924317 | M27C256B-12B3 | 256 Kbit (32Kb x 8) EPROM, 5V, 120ns | SGS Thomson Microelectronics |
| 924318 | M27C256B-12B3TR | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924319 | M27C256B-12B3X | 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM | ST Microelectronics |
| 924320 | M27C256B-12B6 | 256 Kbit (32Kb x 8) EPROM, 5V, 120ns | SGS Thomson Microelectronics |
